In fact.

What Ye Xuan was most worried about was the leakage of tank technology.

Because the infrastructure construction capacity of Qingguo is not strong now.

At least compared with the big countries of Qin, it is a lot worse, once the complete tank technology is known by the people of those countries, then it will be a big disaster for Qingguo.

Although Ye Xuan had already prepared for the leakage of tank technology......

Chapter 223 of "Back to Ancient Marrying the Empress" is too weak is in the middle of the hand, please wait a while,

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